There's a standard by Google for transit timings, and Translink, the public transport authority in my state, outputs these times. They're live. Apps like 'Tran

There's a standard by Google for transit timings, and Translink, the public transport authority in my state, outputs these times. They're live. Apps like 'Transit' also (accurately) show the current GPS location of the bus as it approaches, and it updated every minute (I believe)